Rinku from India uses our educational materials to advance her career in IT. She wanted to take a picture of herself with a printout of our logo. However, she can't afford a printer so she took a picture of herself with her laptop displaying our logo and emailed us her picture.
Idyawati is a Doctoral candidate at the International Islamic University of Malaysia.
Using our site, she gets world-class educational materials for free.
She can spend her money on buying an extra semester instead.
Lu is from China and currently studies in the US: “For a girl from China, I fully understand the pain of buying a legal copy of a U.S. textbook.”
This site is a labour of love and will never become profitable, only financially self-sustaining. We will never get paid for the tens of thousands of hours that we have put into the project since 2002, and we expect to put even more money into the project in the coming years. However, we hope that you will share the costs with us. We think that's fair: If we help you, you'll help us.

25.4%
Subtotal Public Relations and Media Coverage:
58.5%
Subtotal Production costs:
5.1%
Subtotal Operating costs:
11%
Subtotal Payroll costs:
100%
Total:
The above-mentioned expenses do of course not include the 9 years we've put into coding our publication system (some 45,000+ lines of code), building and maintaining the website since 2002, building our network of authors, flying around the world to do video interviews, studying Danish copyright law, and the other things that have made our project a success.
We can't say this enough: Linking is the most effective way of making us more visible on Google. No matter how insignificant you think your site is, linking helps us a lot!
To add a simple text link, put this HTML code on your site:
<a href="http://www.interaction-design.org/">
Interaction-Design.org
</a>
"Interaction-Design.org is a new type of encyclopedia! It's free, it includes HD videos, commentaries, and lots more. All chapters are written by leading figures within each subject."
You can also include one of our logos
This will help spread the word about our daily quote service:
Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.
-- Antoine de Saint Exupéry
People from around the world show their support for our mission to make world-class educational materials available for free. It's all about the Democratization of Knowledge.
Get creative and add your picture!
Add your own picture!
This site is huge and it may take months to discover a typo, grammar error, technical problem, bug, etc.
If you find one please tell us at once! If not, it may continue to annoy visitors like yourself for a very long time.
Add your favourite thoughtful quote to our extremely popular quote-of-the-day collection.